Running Rich

[crackerkorean]

When I get in the car in the mornings and turn the heat on I smell gas.
I also have rough idling problems and when crusing trying to maintain speed the car bucks.

I have cleaned the MAF and checked the injectors. (unless one is stuck open)
I have not replaced the fuel filter but I dont think its a fuel delivery problem.

I have checked the TPS for dead spots and it has non but I am wondering if its off.

what else can I check/clean to get this fixed. I think this might be the cause if my horrid gas mileage.


BTW This is my first post so HI

[Alan_no.1]

O2 sensor?? timing??

[DRFT]

i have the same problem too. inside my car i can smell a lot of carbon. Ive changed the o2,injectors, o rings and seals, plugs and wires and still no go. last thing to do on the list is timing.

[rossfashow]

i've got the same problem. i smell carbon monoxide but thats because i've got a leak where the turbo meets the manifold. studs snapped. also my mechanic told me, i need a new idle air control valve. so that could be it too the problem hard time starting in the mornings.

[Tygma]

Carbon Monoxide is tasteless, colorless, and odorless so how the hell could you smell it. Are you a CO detecter? No.

[-usmd-180sx]

** Spider senses tingling!!**

[rossfashow]

ok...fine... exhaust gases.. happy now?

[aznpoopy]

check the coolant temp sensor...

if you're engine thinks its cold 24/7, it dumps extra fuel in to warm up the car, like a typical accelerated warm up system.

or so i've read.

[Tygma]

ok...fine... exhaust gases.. happy now?


Just giving you a hard time mang.

[Alan_no.1]

check timing, if not.......

[Ricks15]

Go and get youre ride checked do a dyagnosticts, Myabde youre TPS sensor or Engine temp sesnors are out and arnt maked any voltage, just replace them if there old.

[chibo]

Out of curiousity, you aren't running an SR20 with the stock FPR and an upgraded fuel pump, are you?

[neilsan]

im in the same boat... bucks BAD while trying to maintain speed. on boost it runs beautifully, won't idle worth a shit.

Timing is spot on.
TPS adjusted to .5 closed, 3.8 at 9/10ths and that last 10th it drops to 2.6? its fine for now if i don't floor it.
NGK Iririums are gapped to .030, are black and sooty indicating very rich.
Havent bought a new O2 sensor yet.
Replaced coolant sensor (s13ka to s13sr, same plug). SR sensor came out bone dry, thinking air pocket there by the t-stat, but single wire gauge sender works fine??

The car is barely drivable.
still running on stock pump and ka filter... but i did replace the filter about 6000 miles ago.

What's the problem with using a walbro and the stock FPR?

[crackerkorean]

Stock KA in this one. Saving for RB25 but thats in a year or so.

TPS checked ok. I am wondering if I have a thermostate installed. they guy I bougth the car from saied he put one in but I am un sure of that.

How much does a temp sensor usually run?

[Hitawall]

very common prob , if you changed to a cold air intake disconnect the maf and look at the connectors on both the wire and unit . this happens mostley when you put a intake on a car thats up there in miles check your fpr 2nd and then unplug 1 injector at a time and see if your car runs the same with one of them unhooked , you already went through this but i think double checking helps i used a stripped wire and wadded it up and stuck them in the maf plug to give it a good contact and it has fixed 3 or 4 of these ka idle air / fuel probs